mirror of https://gitee.com/openkylin/linux.git
stop using DMA_xxBIT_MASK
Now that we have DMA_BIT_MASK(), these macros are pointless. Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -13,9 +13,15 @@ enum dma_data_direction {
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DMA_NONE = 3,
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};
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#define DMA_BIT_MASK(n) ((1ULL<<(n))-1)
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#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
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#define DMA_64BIT_MASK (~0ULL)
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/*
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* NOTE: do not use the below macros in new code and do not add new definitions
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* here.
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*
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* Instead, just open-code DMA_BIT_MASK(n) within your driver
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*/
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#define DMA_64BIT_MASK DMA_BIT_MASK(64)
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#define DMA_48BIT_MASK DMA_BIT_MASK(48)
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#define DMA_47BIT_MASK DMA_BIT_MASK(47)
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#define DMA_40BIT_MASK DMA_BIT_MASK(40)
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